Safety feed device for hydrocarbon-burners.



APPLICATION IILIED JAN. 5, 1909.

Patented Apr. 11 1911.

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WALTER M. HIBBITT, OF LEBANON, TENNESSEE.

SAFETY FEED DEVICE FOR HYDROCARBON-IBURNERS.

Specification of Letters Patent.

Patented Apr. 11, 1911.

Application filed. January 5, 1909. Serial No. 470,758.

To all whom it may concern:

Be it known that I, WALTER M. HIBBITT, a citizen of the United States,residing at Lebanon, in the county of Wilson and State of Tennessee,have invented new and useful Improvements in Safety Feed Devices forHydrocarbon-Burners, of which the following is a specification.

This invention is an improved safety feed device for hydrocarbon burnersadapted to keep the liquid hydrocarbon in the pipe inimediately adjacentthe burner separated from the liquid hydrocarbon in the reservoir andthe pipe immediately connected to the reservoir so that flame can notpossibly pass from the burner through the feed pipe to the reservoir,the said device being also adapted to regulate the passage of the liquidhydrocarbon from the reservoir to the burner and prevent an excessquantity from being fed to the burner.

lVith these and'other objects in view,

the invention consists essentially in a liquid hydrocarbon feed duct fora burner, said duct having a depressed trap portion to contain aquantity of mercury and being further provided with a check valve toclose against back pressure as hereinafter described and claimed.

In the accompanying drawings :-Figure l is a sectional view of agasolene stove showing the burner thereof provided with a safety feeddevice constructed in accordance with my invention, the burner, theseparate feed device and the reservoir being shown in elevation. Fig. 2is a vertical longitudinal sectional view of that portion of my improvedsafety feecl device which contains the trap and check valve.

My improved safety feed device is for use in connection with any form ofburner supplied by gravity with liquid hydrocarbon fuel from areservoir. For the purposes of this specification, I show the saidsafety feed device in use in connection with the burner 1 of a gasolenestove, the stove being indicated at a, the reservoir at 2, the pipewhich immediately leads from the reservoir at 3, the pipe which isimmediately connected to the burner at 4 and my improved safety pipe orduct at 5. The usual valve for the burner is indicated at 6. Inaccordance with my invention my improved feed duct or de-' vice 5 isprovided with a depressed offset portion 7 which constitutes a trap forthe reception of a suflicient quantity of mercury or other suitablematerial 8 to fill the horizontally depressed portion 7. At the end ofthe said trap, nearest the pipe 3 which leads directly from thereservoir is a check valve 9 which is submerged in the mercury.

In the operation of the invention, the gasolene or other liquidhydrocarbonpasses from the pipe 3 to the burner pipe through the trapformed by my improved safety device, the mercury which fills the trapcausing the liquid hydrocarbon to pass drop by drop therethrough at thesurface of the mercury, the drops of the liquid hydrocarbon having todisplace the mercury in order to pass in obedience to the pressure fromthe reservoir along the surface of the mercury from the feed pipe to theburner pipe. Hence the mercury effectually prevents the liquidhydrocarbon from flowing in an excessive quantity from the feed pipe tothe burner pipe. Although the liquid hydrocarbon thus passes drop bydrop from the feed pipe to the burner pipe it may accumulate in thelatter in the quantity required to keep the burner supplied, but in theevent of fire in the burner pipe, flame is effectually prevented frompassing back to the feed pipe through the safety device by reason of thepresence of the mercury or other fluid seal in the trap of the safetydevice. Furthermore in the event of fire in the burner pipe or at anypoint between the burner and the trap the consequent production andpressure of gas in that portion of the pipe will cause the check valve 9to close so that the check valve will coact with the mercury or otherfluid seal to prevent the passage of fire from the burner pipe to thefeed pipe.

What is claimed is The combination with an oil reservoir, of a feed pipeleading from its bottom, a burner head having a centrally dependingstem, a cut-off valve located within said stem, a trap comprising arelatively long horizontal tubiform portion and upright relatively shorttubiform arms connected with the In testimony whereof I affix mysignature stem and said feed plpe, a quantity of 1ner l 1n presence oftwo Witnesses.

cury entirely fillin the said trap and a 1 check valve mounted in theupright arm of WALTER HIBBITT' the said trap contiguous the feed tubeand Vitnesses: held submerged in the quantity of mercury, JOHN A.SPEARS, substantially as described. E. H. DE P01.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 6.

